/Engine/Source/Editor/UnrealEd/Public/Kismet2/KismetEditorUtilities.h
Tries to compile a blueprint, updating any actors in the editor who are using the old class, etc...
static void CompileBlueprint ( [UBlueprint](API\Runtime\Engine\Engine\UBlueprint) * BlueprintObj, EBlueprintCompileOptions CompileFlags, class [FCompilerResultsLog](API\Editor\UnrealEd\Kismet2\FCompilerResultsLog) * pResults )